... temperature: 3, 000K-12, 000k 6) Voltage: 12V 7) wiring: High temperature-risitant, high voltage-resistant 8) Cover: Crystal glass ... ) Bulb is directly inserted into ballast, easy installation 4) Wiring harness is made of silica gel which is soft and durable ... and ballast, more tightness 9) easy installation, without connecting wiring harness and fixing ballast, 10 )14 MONTHS guarantee FOR BALLASTS, ...